The Nut,self-Locking,cap, cataloged under National Stock Number 5310-00-660-3409, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Boeing Distribution Services X, Inc.. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-660-3409 |
| Primary Part Number | 26C02 |
| Item Name | Nut,self-Locking,cap |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Boeing Distribution Services X, Inc. |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Bearing Surface Finish | 125.0 MICROINCHES |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Temp Rating | 550.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | AMS 5022 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | SAE 1010 ASSN STD SINGLE MATERIAL RESPONSE CAP |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Specification/standard Data | 81205-BACN10R MANUFACTURERS STANDARD |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.454 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | CAP |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 1117 NUT |
| Material | STEEL COMP 1010 CAP |
| Bearing Surface Type | CHAMFERED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 26C02 | Boeing Distribution Services X, Inc. (USA) |
| 3M154-02 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| BACN10R10 | 5/2 Secondary reference U.S. Government activity |
| 26C02 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-660-3409 is a Nut,self-Locking,cap, manufactured by Boeing Distribution Services X, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-660-3409 has 2 manufacturer part numbers on file: 26C02 (Boeing Distribution Services X, Inc.), 3M154-02 (The Boeing Company Div Defense).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-179-0832. Verify interchangeability with system specifications before substitution.
Key specifications for 26C02: Width Across Flats: 0.375 INCHES NOMINAL IN; Bearing Surface Finish: 125.0 MICROINCHES; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF. 19 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.